Sand-cast high-strength precoated sand core, manufacturing machine and manufacturing technology

Abstract

The invention relates to a sand-cast high-strength precoated sand core, a manufacturing machine and a manufacturing technology. The core comprises a core body, a core bar main body, a reinforcer, a connector and a connection bolt; in the core manufacturing process, the special manufacturing machine needs to be used and comprises a feeding mechanism, a crushing mechanism and a shell body, and the feeding mechanism and the crushing mechanism are installed in the shell body; and the method for manufacturing the core by using the manufacturing machine comprises the following steps of precoated sand manufacturing, core box core manufacturing, core dressing and core inspecting. According to the sand-cast high-strength precoated sand core provided by the invention, parts of the core bar are detachably connected, the core bar can be taken out from a narrow space after being disassembled, the structural integrity of the core bar cannot be broken, and thus, repeated use of the core bar can be achieved.

Description

technical field [0001] The invention relates to the field of casting, in particular to a high-strength film-coated sand core for sand casting, a manufacturing machine and a manufacturing process. Background technique [0002] Coated sand mainly uses high-quality selected natural quartz sand as raw sand, thermoplastic phenolic resin, urotropine and reinforcing agent as raw materials, and the proportion can be adjusted appropriately according to different technical requirements of users. One of the best molding materials, it is also often used to make sand casting cores. [0003] The core is commonly known as "mud core" and "core". It is used to form the internal structure of the casting during casting. The core sand is often made of raw sand and binder. It is made by hand or machine in the core box. In order to strengthen the core The rigidity and strength of the core, often set the core bone in the core. Commonly known as "mud core bone" and "core iron", the core bone is a...

AI Technical Summary

Problems solved by technology

Due to the narrow space in the mold, when cleaning the casting after molding, the mandrel needs to be cut off and decomposed before it can be taken out, which is inconvenient to operate and takes a long time, and the mandrel cannot be used multiple times, resulting in waste of materials

[0004] In addition, the production of coated sand needs to go through steps such as stirring and mixing, cooling, crush

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